Bloodrager levels do not count out as barbarian levels. The bloodrage class feature just counts as rage. So you would NOT meet the barbarian 6 requirement.
Primal Choices: At 4th level and every 4 levels thereafter, a primalist can choose to take either his bloodline power or two barbarian rage powers. If the primalist chooses rage powers, those rage powers can be used in conjunction with his bloodrage, and his bloodrager level acts as his barbarian level when determining the effect of those bloodrage powers and any prerequisites. Any other prerequisites for a rage power must be met before a primalist can choose it. This ability does not count as the rage power class feature for determining feat prerequisites and other requirements.
This ability alters the bloodline class feature.
The part where it says "his bloodrager level acts as his barbarian level when determining the effect of those bloodrage powers and any prerequisites" sounds to me like Bloodrager levels count as Barbarian levels for the purpose of qualifying for Rage Powers when using this archetype.
is there an issue if i use 2 lvls of barbarian to pick up lesser beast totem, to use to get the next two beast totems as a bloodrager?
The biggest issue I see is that you'll have 4 fewer rounds of bloodrage and a vestigal rage feature that's not as good as your bloodrage.
The rage power you pick up with your Barbarian levels is a barbarian class feature. It does not carry over to Bloodrager.
Bloodrager cannot use Lesser Beast Totem unless it picks it up using its own Primalist archetype. And it cannot use rage powers gained as a barbarian to qualify for prerequisites of rage powers gained as a bloodrager.
"Use your bloodrager level as your barbarian level" only means you substitute one for the other. They do not stack unless you have wording more similar to "your bloodrager levels count as barbarian levels".
they don't stack for qualifying
I examined the rules carefully, and zainale's plan works.
In the Core Rulebook, the rage powers did not have other rage powers as prerequisites. A few had a level requirement, "A barbarian must be at least 8th level before selecting this rage power." The Advanced Player's Guide introduced rage powers that have other rage powers as prerequisites.
Presented below are a number of new rage powers to help you customize your barbarian, as well as several classic barbarian archetypes to help you in building your character, each one including a number of suggested rage powers that, while not mandatory, work to flesh out the character concept. Rage powers marked with an asterisk (*) can be found in the Pathfinder RPG Core Rulebook.
Rage Powers (Ex): The following new rage powers can be taken by any barbarian that meets the prerequisites. Totem rage powers grant powers in a theme. A barbarian cannot select from more than one group of totem rage powers. For example, a barbarian that selects a beast totem rage power cannot later chose to gain any of the spirit totem rage powers.
Beast Totem (Su): While raging, the barbarian gains a +1 natural armor bonus. This bonus increases by +1 for every four levels the barbarian has attained. A barbarian must have the lesser beast totem rage power to select this rage power. A barbarian must be at least 6th level to select this rage power.
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The barbarian rage power class ability does not define the prerequisites on the rage powers; instead, the rage power itself gives the rules for its selection. There is no requirement that the rage power come from the barbarian's rage power class feature. In fact, it could have come from the Extra Rage Power Feat, also introduced in the Advanced Player's Guide.
Extra Rage Power
You have unlocked a new ability to use while raging.
Prerequisite: Rage power class feature.
Benefit: You gain one additional rage power. You must meet all of the prerequisites for this rage power.
Special: You can gain Extra Rage Power multiple times.
Since the only way to get rage powers was through the barbarian class or a feat that required a barbarian class feature, we had no problem about the source of a rage power. It was tied to the barbarian.
Then came the Advanced Class Guide with Primalist Bloodrager and Skald.
The Skald rage powers are the simple case, so let me cover them first. The Skald Rage Powers class ability explicitly says,
Rage Powers (Ex)
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If the skald has rage powers from another source, he (but not his allies) can use those rage powers during an inspired rage.
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If the skald has the ability to rage from another source, he can use his skald rage powers during that rage as well.
There are some limitations on sharing rage powers from barbarian levels and skald levels. For example, "The skald uses his skald level as his barbarian level for the purpose of selecting rage powers that require a minimum barbarian level." Thus, a barbarian 8/skald 1 character with a rage power that require 8th level barbarian could not select that power during an inspired rage because his skald level would be too low.
The Primalist Bloodrager rage powers are described in a short paragraph.
Primal Choices: At 4th level and every 4 levels thereafter, a primalist can choose to take either his bloodline power or two barbarian rage powers. If the primalist chooses rage powers, those rage powers can be used in conjunction with his bloodrage, and his bloodrager level acts as his barbarian level when determining the effect of those rage powers and any prerequisites. Any other prerequisites for a rage power must be met before a primalist can choose it. This ability does not count as the rage power class feature for the purposes of feat prerequisites and other requirements. This ability alters the bloodline class feature.
This one has stricter restrictions. Primal Choices does not qualify for the Extra Rage Power feat. The "those" in "If the primalist chooses rage powers, those rage powers can be used in conjunction with his bloodrage,..." implies that only those rage powers and not rage powers from other sources can be used during bloodrage. And by exact wording, the barbarian level does not matter for rage powers that are already selected, though this property could easily be changed by an FAQ clarification.
However, when it comes to qualifying for rage powers, Primal Choices covers only level: "his bloodrager level acts as his barbarian level when determining the effect of those rage powers and any prerequisites." Other rage powers as prerequisites are not mentioned; therefore, we default to the rules in the rage powers themselves. Thus, lesser beast totem is lesser beast totem, regardless of which source it came from. The prerequisites are satisfied.
Furthermore, the rules give a surprise bonus: nothing in the Primalist Bloodrager's Primal Choices ability stops the Primal Choices rage powers from working with the barbarian's rage. Rage powers are designed to work with barbarian's rage, and other classes select them from the barbarian's list, so no special wording is necessary to activate rage powers from another source.
The difference between these two is that, despite sharing the terminology, "counts <x> levels as <y> levels", the Magus's Fighter Training needs the caveat that levels in actual Fighter stack with the "virtual" Fighter levels provided by the class feature. Brawler lacks that statement. So a Magus 10/Fighter 10 counts half his Magus levels as Fighter levels and stacks them with 10 actual Fighter levels for an effective total of 15 Fighter levels to qualify for feat prerequisites. A Brawler 10/Fighter 10, on the other hand, only counts their 10 Brawler levels as Fighter levels with no stacking so you effectively take the higher of either Brawler or Fighter to determine whether you meet a Fighter level prerequisite.
A minor problem with this is that the wordings aren't precisely the same.
The bloodrager Primalist archetype says you treat your bloodrager level as your barbarian level. The magus class ability says you treat half your magus level as your fighter level. Both of these match the premise, "treat X as if it were Y". Without the caveat the Magus has, you replace Y with X.Brawler, unusually, has a different, distinct wording, one that doesn't appear with most effects of this type. For Brawler, they treat their levels, plural, as fighter levels and monk levels.
To figure out what this means, one needs to look at what level means.
A character's level represents his overall ability and power. There are three types of levels. Class level is the number of levels of a specific class possessed by a character. Character level is the sum of all of the levels possessed by a character in all of his classes.
So the bloodrager treats their bloodrager (class) level, the sum of all their levels in the bloodrager class, as their barbarian (class) level. The magus does so similarly, with the added caveat that they stack.
But the brawler says levels with a plural, so it actually interferes with the glossary definition of "level". Since one's class level is defined as how many individual levels in that class that character has, and brawler causes its levels to count as other classes' levels on an individual basis, class level sees your fighter level as [these levels in Fighter] as well as [these other levels which count as Fighter], without needing to worry about whether it stacks or not.
I don't understand why this thread has an argument whether barbarian levels stack with bloodrager levels for meeting the level requirement for rage powers. They don't stack, just like a Wizard 2/Sorcerer 3 character would not qualify as caster level 5 requirement for Craft Wand.
But zainale would be replacing the 12th-level bloodline power of a bloodrager with Beast Totem, which requires bloodrager level 6, and Greater Beast Totem, which requires bloodrager level 10. That is no problem.
If you want a real issue about level to argue about, how about the following. The rules as written would let zainale's barbarian2/bloodrager 12 use Beast Totem and Greater Beast Totem during his barbarian rage, not just his bloodrager bloodrage. The level requirement says the character cannot select the rage powers before 6th and 10th level, but they say nothing about not using them during a low-level barbarian rage after they are selected via Primal Choices. This interpretation depends only on a single word, so I would not be surprised if an FAQ clarification changed it, but it currently should work.